4 research outputs found

    Thermal Annealing Influence on Ions Implanted Fe-Cr Model Alloys

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    Binary Fe-11.62wt%Cr alloys were investigated in as-received state as well as after a two step helium ion implantation at different energies (100 keV and 250 keV) with doses up to 3.12xl018 cm-2. In order to study changes in alloys in dependence on the temperature, thermal annealing was performed at temperatures of 400, 475, 525 and 600 °C and specimens were afterwards measured by a pulsed low energy positron system (PLEPS). Annealing out of defects at lower temperatures was not as significant as expected, and we also encountered difficulties with defect identification. However, an apparent decrease of defect size was observed in the specimen annealed at a temperature of 600 °C.JRC.F.4-Nuclear Reactor Integrity Assessment and Knowledge Managemen

    Different chromium content and thermal annealing influence on ions implanted Fe-Cr model alloys

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    Reduced activation ferritic/martensitic steels (RAFM) represented by binary Fe-Cr alloys, with different chromium content, were studied in as-received state as well as after helium ions implantation. In order to study changes in dependence on the temperature, thermal annealing of He ions implanted Fe-11.62%Cr specimens was performed. Measurements by Pulsed Low Energy Positron System (PLEPS) in Garching, Germany were performed afterwards. Annealing out of defects at lower temperatures was not significant as was expected and some uncertainties are present. Extensive decrease of positron lifetime of defects was observed in specimens annealed at temperature 600 ÂşC.JRC.F.4-Nuclear Reactor Integrity Assessment and Knowledge Managemen

    CMS : the TriDAS Project Technical Design Report; v.1, the Trigger Systems

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    CM

    CMS TriDAS project: Technical Design Report, Volume 1: The Trigger Systems

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